Verizon is expected to unveil “Carryover Data,” a rollover plan that allows customers to keep unused data from one month to the next. Another anticipated change is called “Safety Mode,” something that will protect customers from overage fees. Instead of getting socked with a fee for using too much data, customers would see their data connection slowed down until the end of the billing cycle.

CNET reports that existing customers won’t be forced to change to the new plans but will instead get to opt in if they choose. Verizon is expected to unveil the new plans during a news conference Wednesday afternoon.